
Cross bar end ball | GSV-No. 2838
1. February 2019
Center lock for 3-Point Locks complete stainless steel latch protrusion 16mm | GSV-No. 2436 ZM
2. February 2019Mortise latchset complete stainless steel 304 backset 55 / 65mm | GSV-No. 1301 GF
SKU: 1301 GF
Standard productThe mortise latch lock set with a backset of 55 mm or 65 mm (GSV-No. 1301 GF) provides a durable and reliable solution for doors without a cylinder lock. Its design is based on the mortise latch lock 1301F (Item No. 118821), which operates with a simple, mechanical locking function. The mechanism uses only a latch, making installation and operation both efficient and straightforward. This makes the set ideal for use on interior doors or in technical rooms where complex locking mechanisms are not required.
The set includes short plates with handles of type 1300F (Item No. 116060), which are made entirely of high-quality stainless steel A2. The surface of these parts is matte brushed, which not only ensures an attractive appearance but also makes maintenance easier and the surface resistant to fingerprints. These features contribute to long durability and a consistently well-maintained appearance.
The set is suitable for door thicknesses from 28 mm to 60 mm and is supplied with the matching sleeve screws M5 × 66. A special feature of the set is the absence of a manufacturer’s logo on the faceplate, which contributes to a particularly simple and elegant appearance.
Thanks to the use of high-quality materials and precise construction, this lock set offers exceptional longevity. It is ideally suited for use in offices, public buildings, or upscale residential areas. Installation is quick and easy, as all components are perfectly coordinated and can be assembled without difficulty.
Current general delivery dates subject to the usual reservations::
Brass:
• The general delivery time for products in brass satin chromed is currently 6-8 weeks
• The general delivery time for products in brass polished / brass polished chromed is currently 8-10 weeks
Stainless Steel:
• The general delivery time for products in stainless steel is currently 6 weeks
• The general delivery time for products in stainless steel polished / fine grind is currently 6-8 weeks
Aluminum:
• The general delivery time for products in Aluminum silver andodized is currently 6 weeks
• The general delivery time for products in Aluminum powder coated is currently 6-8 weeks
Special/project products:
No standard delivery time, as components are only made to order. In each case by individual arrangement

Each item with a stock quantity can be dispatched within 24 hours. The surcharge for the 24h delivery service is 5%.
Our products do not contain the following chemical hazardous substances:
Asbestos
Polychlorinated biphenyls (PCBs)
Chlorofluorocarbons (CFCs)
Halons
Carbon tetrachloride
1-1-1-Trichloroethane
Hydrochlorofluorocarbons
Hydrobromofluorocarbons
Methyl bromide
Bromochloromethane
Anti-fouling systems containing organotin compounds as a biocide
Cadmium and cadmium compounds
Hexavalent chromium and hexavalent chromium compounds
Lead and lead compounds larger 3%
Mercury and mercury compounds
Polybrominated biphenyl (PBBs)
Polybrominated dephenyl ethers (PBDEs)
Polychloronaphthalenes (Cl >= 3)
Radioactive substances
Certain shortchain chlorinated paraffins
Perfluorooctane sulfonic acid (PFOS)
Brominated Flame Retardant (HBCDD)
The hand of door for mortise locks is defined as:
if the door is closed and the hinges are visible on the right/left, then the door is right/left hand. The door is therefore hinged on the right/left and according by definition of DIN right/left.
Or: if you grasp the handle with your right hand and latch and deadbolt show to the left, then it is right hand. If you grasp the handle with your left hand latch and deadbolt show to the right, it is a left hand.

Rim locks
The hand of door for rim locks is defined as:
if the door is closed and the hinges are visible on the right/left, then the door is right /left hand. The door is therefore hinged on the right/left and according to the definition DIN “right/left".
In addition to the designation “left” and “right”, it is to be indicated whether the locks are intended for inward or outward opening doors.

Sliding door mortises
The hand of door for sliding door mortises is the same for right and left. Sliding rim door locks different for left and right doors.
When ordering, always indicate “left” or “right”.

Latch
The lock latch keeps the door shut. In order to open the door, it must be retracted. |
Type of latch design | Illustration |
single latch | ![]() |
anti-vibration or three-piece latch | ![]() |
rolling latch adjustable | ![]() |
POM-latch for strike dampening | ![]() |
Deadbolt
The deadbolt regulates the access rights through the turning motion of the cylinder by key. The deadbolt is being driven out or retracted through the turning motion. |
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Faceplate
The faceplate is the visible part of the lock case. The faceplate, the latch and the deadbolt are the only visible parts of a mortise. |
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Handle hub
The handle hub takes the square spindle of the handle in order to retract the latch inside the lock through the turning motion of the same. This process allows the opening of the door. The shipbuilding norm specifies a 9mm square with a 2° incline. Schwepper supplies also with 8mm square, special contour or 0° incline on request. |
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WC-/privacy hub
The WC hub takes the square spindle of the olive or thumb turn, that retracts or drives out the deadbolt from the inside - analogue to the turning motion of the cylinder. The shipbuilding norm specifies a 7mm square. Schwepper supplies also with 8mm square on request. |
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Dimension | Illustration | |
Backset
The backset is the distance from the front edge of the faceplate to the center of the cylinder hole respectively handle hub square. The rear backset behind the center line remains always 27mm. |
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Distancing
The distancing is the dimension from the center of the handel hub and the center of the hole for profile cylinder / privacy (WC) / key. The industry standard in shipbuilding is 75mm. |
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Latch protrusion
The latch protrudes according to the industrial DIN standard in shibuilding 14mm. Other technical standards for latch protrusion are: 16 mm according to DOT (Department of Transportation) 19 mm according to USCG (US Coast Guard) |
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